Hi,

I have 2008 A3 Concert3 system.
I dont have AUX input. I bought an aux cable from Aliexpress for the Aux input. Iadded a picture of this cabe.

I connected the cable to the Concert3 sound system, but it did not work. I push the "CD buttton" two times. Or I press and hold CD button. but not work.

What is wrong? Can you help me?

Thanks